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3500/34 TMR Relay I/O Module
3500/34 TMR Relay I/O Module
3500/34 TMR Relay I/O Module

Bently Nevada 125704-01 TMR Relay I/O Module

Rear-slot TMR relay I/O spare for Bently Nevada 3500/34 assemblies; confirm the complete component scope before quotation.
  • Item NO.:

    125704-01
  • Order(MOQ):

    1
  • Goods Stock:

    18
  • Payment:

    T/T
  • Lead Time:

    In stock
  • Weight:

    0.5kg
  • Dimension:

    24.1x2.44x9.91cm
  • Description:

    TMR Relay I/O Module
  • Price:

    Ask

Bently Nevada 125704-01

TMR Relay I/O Module for the 3500/34 relay assembly

Product Description

The Bently Nevada 125704-01 is the full-height rear TMR Relay I/O Module used as the physical relay-output stage of a 3500/34 assembly. In the official architecture, two half-height TMR Relay Modules perform the configured logic in parallel, while the rear I/O module receives their alarm-contact signals and operates the field relay contacts.

Within each of its four channel groups, the Bently Nevada 125704-01 uses three relays to implement 2-out-of-3 hardware voting. This arrangement is intended for the TMR relay path; buyers should therefore identify whether they need this rear I/O spare alone or the other components required for a complete 3500/34 assembly before quotation.

Request an exact-match quotation

Send the complete part number, required quantity, current 3500/34 assembly information and delivery destination. We will confirm the offered scope before quotation.

Manager: JimPei

Phone: +8618020776782

Email: sales1@apterpower.comWhatsApp: +8618020776782

ApterPLC industrial automation sourcing and quotation support

Features and Functions

Four voted output channels
Twelve relays are arranged as four groups of three, providing 2-out-of-3 relay voting for every channel group.
Alarm-signal validity handling
Each channel receives three Alarm Contact Signals. When the associated data path is Not OK, that signal is marked invalid and is not evaluated by the I/O voting circuit.
Dedicated rear I/O role
The module occupies one full-height rear rack slot and provides the relay-contact termination side of the 3500/34 assembly.

Technical Information

Manufacturer Bently Nevada
Part number 125704-01
Product family 3500/34 TMR Relay Module
Product type TMR Relay I/O Module
Relay arrangement 12 relays; four channel groups of three
Voting method 2-out-of-3 hardware voting for each relay channel
Relay operation Normally energized
Contact life 100,000 cycles at 1.5 A / 24 Vdc or 1 A / 120 Vac
Maximum switched power 60 W dc; 125 VA ac
Maximum switched current 2 A, resistive load
Maximum switched voltage 150 Vdc; 220 Vac
Module dimensions 241 x 24.4 x 99.1 mm (H x W x D)
Module weight 0.5 kg
Rack space One full-height rear slot
Operating temperature -30 to +65 degrees C
Storage temperature -40 to +85 degrees C
Humidity 95%, non-condensing
Ordering risk: component scope

125704-01 identifies the rear TMR Relay I/O Module, not a complete 3500/34 set. Before ordering, compare the installed nameplate and confirm whether the required scope includes the two half-height TMR Relay Modules, mounting hardware or only this I/O spare.

Frequently Asked Questions

How can a buyer tell whether 125704-01 covers the whole 3500/34 relay requirement?
It identifies the full-height rear TMR Relay I/O Module only. Confirm whether the order also needs either half-height front relay module or mounting hardware.
Where is Alarm Drive Logic configured when 125704-01 is part of the relay assembly?
Configure the logic through the 3500 Rack Configuration Software for the associated TMR relay modules. The rear I/O module receives their alarm-contact signals and performs the hardware vote.
What should maintenance record before removing 125704-01 from a running rack?
Record the rear-slot position, terminal numbers, relay loads, front-module identities, and current rack configuration. Label every conductor before disconnection.
Where should diagnosis start when an output voted through 125704-01 is unexpected?
Review the three relay-data-path OK states and the configured Alarm Drive Logic before changing field wiring. A path reported not OK is treated as an invalid alarm-contact signal.
What should be verified before 125704-01 is returned to service after replacement?
Confirm terminal mapping and relay-load limits, then prove the required normal, alarm, and de-energized behavior under the approved site test procedure.
Which details should accompany an RFQ for 125704-01?
Send the exact rear-module number, both associated front-module numbers, rack and slot information, relay-load data, quantity, condition, destination, and clear nameplate images.
Official reference basis
Technical statements on this page are mapped to Bently Nevada manufacturer documents 129771 and 141534-01. The current Baker Hughes 3500 Manuals and Datasheets index, document 141526 Rev. J, identifies document 129771 as the user guide covering the 3500/34 TMR Relay Module.

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Warranty and quotation contact

Manager: JimPei

Phone: +8618020776782

Email: sales1@apterpower.comWhatsApp: +8618020776782

Apter sells industrial automation parts including new and discontinued products, and purchases such featured products through independent channels. Apter is not an authorized distributor, dealer or representative of the products featured on this site. All product names/product images, trademarks, brands and logos used on this website are the property of their respective owners. Product descriptions, depictions or sales with these names, images, trademarks, brands and logos are for identification purposes only and do not imply any affiliation or authorization to any rights holder.

Official 3500 Documentation Index

Bently Nevada 3500 Manuals and Datasheets, document 141526 Rev. J. The index identifies document 129771 as the user guide covering the 3500/32, 3500/32M and 3500/34 relay modules.

Open official PDF on ApterPLC

Need the exact 3500/34 documentation package? Request document support by email.

3500/22M 288055-01

330104-10-20-10-02-05

133323-01

136711-01

3500/32M 149986-02

330104-12-20-10-01-00

133396-01

138708-01

3500/33 149986-01

330104-13-20-10-02-00

133434-01

140471-01

3500/40M 140734-01

330104-15-23-10-02-00

133442-01

140471-02

3500/40M 176449-01

330104-19-25-10-11-05

133819-01

140482-01

3500/60 163179-01

330105-02-12-05-02-00

133819-02

144181-50

3500/62 163179-03

330105-02-12-05-02-05

133827-01

146031-01

3500/72M 176449-08

330105-02-12-05-02-CN

134652-01

149992-01

3500/94 145988-01

330105-02-12-10-02-00

135137-01

149992-02

3500/15 106M1079-01

330105-02-12-15-12-05

135473-01

16710-30

3500/42M 176449-02

330105-02-12-15-12-CN

135489-01

16710-33

3500/50M 286566-02

330105-02-12-50-02-00

135489-04

172103-01

3500/92 136180-01

330106-00-04-10-02-00

135813-01

172109-01

3500/70M 176449-09

330106-05-30-05-02-00

136188-02

1900/65A

3500/64M 176449-05

330106-05-30-05-02-CN

136483-01

170180-01-00

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